Problem: Consider a system  consisting of the following apparatus, in which gas is confined in one flask and there is a vacuum in the other flask. The flasks are separated by a valve. Assume that the flasks are perfectly insulated and will not allow the flow of heat into or out of the flasks to the surroundings. When the valve is opened, gas flows from the filled flask to the evacuated one.Is work performed during the expansion of the gas?

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We are being asked to identify if work (w) is performed from the expansion of the gas


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Problem Details

Consider a system  consisting of the following apparatus, 

A sample in vessel A is at 1 atmosphere.  Vessel A is connected to vessel B , which has been evacuated, by a tube with a valve on it.

in which gas is confined in one flask and there is a vacuum in the other flask. The flasks are separated by a valve. Assume that the flasks are perfectly insulated and will not allow the flow of heat into or out of the flasks to the surroundings. When the valve is opened, gas flows from the filled flask to the evacuated one.

Is work performed during the expansion of the gas?

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